Optical computing by a vector holographic memory system.
Optical computing by a vector holographic memory system.
复制标题
通过矢量全息存储系统进行光学计算。
DOI：
10.1364/ol.25.001077
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发表时间：
2000
期刊：
影响因子：
3.6
通讯作者：
K. Baba
中科院分区：
文献类型：
--
作者：
K. Kawano;J. Minabe;T. Niitsu;T. Ishii;Y. Nishikata;K. Baba
我们提出了什么是我们所知的一种新的全息存储系统，同时适用于数据存储和光学计算。我们在全息记录中引入了偏振调制参考光。物光束的所需空间频率分量被记录为偏振调制光栅，而另一分量被记录为强度调制光栅。由于偏振调制光栅将入射光的偏振轴旋转90度，因此可以区分检索图像的期望空间频率分量。利用这一特性，我们已经成功地进行了空间频率滤波和频率选择性匹配滤波。该系统能够进行各种光学计算，这取决于偏振调制的设计。
We propose what is to our knowledge a novel holographic memory system that is simultaneously applicable to data storage and optical computing. We introduce a polarization-modulated reference beam into holographic recording. A desired spatial-frequency component of an object beam is recorded as a polarization-modulated grating, and the other component is recorded as an intensity-modulated grating. Since the polarization-modulated grating rotates the polarization axis of the incident light by 90 degrees , it is possible to distinguish the desired spatial-frequency component of the retrieved image. Utilizing this property, we have successfully performed spatial-frequency filtering and frequency-selective matched filtering. The system is capable of a variety of optical computations, depending on the design of the polarization modulation.